JP2002505035A - サリサイド・プロセスに基づくcmosセンサ中で使用するウエル−基板フォトダイオード - Google Patents
サリサイド・プロセスに基づくcmosセンサ中で使用するウエル−基板フォトダイオードInfo
- Publication number
- JP2002505035A JP2002505035A JP50282099A JP50282099A JP2002505035A JP 2002505035 A JP2002505035 A JP 2002505035A JP 50282099 A JP50282099 A JP 50282099A JP 50282099 A JP50282099 A JP 50282099A JP 2002505035 A JP2002505035 A JP 2002505035A
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- Prior art keywords
- photodiode
- well
- substrate
- photocell
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Links
- 239000000758 substrate Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000008569 process Effects 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 238000009792 diffusion process Methods 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000004065 semiconductor Substances 0.000 claims description 12
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 12
- 229910021332 silicide Inorganic materials 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 239000003870 refractory metal Substances 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
- 238000010292 electrical insulation Methods 0.000 claims 1
- 230000002411 adverse Effects 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000005669 field effect Effects 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 235000015701 Artemisia arbuscula Nutrition 0.000 description 1
- 235000002657 Artemisia tridentata Nutrition 0.000 description 1
- 235000003261 Artemisia vulgaris Nutrition 0.000 description 1
- 240000006891 Artemisia vulgaris Species 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14643—Photodiode arrays; MOS imagers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14609—Pixel-elements with integrated switching, control, storage or amplification elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/08—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
- H01L31/10—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
- H01L31/101—Devices sensitive to infrared, visible or ultraviolet radiation
- H01L31/112—Devices sensitive to infrared, visible or ultraviolet radiation characterised by field-effect operation, e.g. junction field-effect phototransistor
- H01L31/113—Devices sensitive to infrared, visible or ultraviolet radiation characterised by field-effect operation, e.g. junction field-effect phototransistor being of the conductor-insulator-semiconductor type, e.g. metal-insulator-semiconductor field-effect transistor
- H01L31/1136—Devices sensitive to infrared, visible or ultraviolet radiation characterised by field-effect operation, e.g. junction field-effect phototransistor being of the conductor-insulator-semiconductor type, e.g. metal-insulator-semiconductor field-effect transistor the device being a metal-insulator-semiconductor field-effect transistor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/547—Monocrystalline silicon PV cells
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Light Receiving Elements (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.入射光信号を電気信号に変換するフォトダイオードであって、 第1の導電型の半導体材料の基板層と、 第2の導電型の半導体材料のウエルと を含み、ウエルが基板中に配置され、pn接合がそれらの間に定められ、ウエル と基板が前記フォトダイオードの感光領域となっているフォトダイオード。 2.基板層およびウエルが半導体材料としてシリコンを含む請求項1に記載のフ ォトダイオード。 3.ウエルと接触する、多量にドーピングされた第2の導電型の半導体材料の拡 散領域をさらに含む請求項1に記載のフォトダイオード。 4.拡散領域に接続された金属電気コンタクトをさらに含む請求項3に記載のフ ォトダイオード。 5.ウエルの一部分を覆う、入射光信号にさらされる絶縁領域であって、入射光 信号の少なくとも一部をウエルと基板層の感光領域中に通過させる絶縁領域をさ らに含む請求項1に記載のフォトダイオード。 6.サリサイド・プロセスで形成されるフォトダイオードであって、高融点金属 の層を拡散領域の上に堆積させ、次いで高融点金属の層と拡散領域の間で反応を 引き起こすことによって第2の金属電気コンタクトが形成される請求項3に記載 のフォトダイオード。 7.第1の導電型がp型であり、第2の導電型がn型である請求項1に記載のフ ォトダイオード。 8.第1の導電型がn型であり、第2の導電型がp型である請求項1に記載のフ ォトダイオード。 9.絶縁領域が、CMOS製作プロセスで形成された浅いトレンチ分離領域であ る請求項5に記載のフォトダイオード。 10.絶縁領域がLOCOS酸化膜である請求項5に記載のフォトダイオード。 11.入射光に電気的に応答するフォトセルであって、 第1の導電型の基板と第2の導電型のウエル領域との間にpn接合を有するフ ォトダイオードであって、ウエルと基板が前記フォトダイオードの感光領域を定 め、ウエル領域が基板中に形成されており、かつ電気絶縁層でほぼ覆われ、絶縁 層が、入射光を感光領域で検出することができるようにほぼ透明であるフォトダ イオードと、 フォトダイオードに結合された、入射光の検出に備えてフォトダイオードを初 期化するためのリセット回路と、 フォトダイオードに結合された、検出された光を表す電気信号を読み取るため の読出し回路と を含むフォトセル。 12.リセット回路が、フォトダイオードに隣接して基板中に形成されたMOS FETを含み、MOS FETが、フォトダイオードに逆バイアスを印加し、 除去するためのスイッチとして構成される請求項11に記載のフォトセル。 13.MOS FETがウエルに接続された拡散領域を有する請求項12に記載 のフォトセル。 14.ウエル−基板フォトダイオードと、連動するリセットおよび読出し回路と をそれぞれ有する、行および列に配列された複数のフォトセル、 フォトセルの行に対して行選択信号を生成するための、フォトセルに結合され た複数の行デコーダ/駆動デバイス、ならびに フォトセルの列をデコードするための、フォトセルに結合された列デコーダを 含む画像センサIC。 15.前記複数のフォトセルの少なくとも1つに結合されたA/D変換器と、 A/D変換器に結合されたデジタル信号処理回路と をさらに含む請求項14に記載の画像センサIC。 16.入射光に応答して、ウエル−基板フォトダイオードのアレイを使用して電 気信号を発生させるステップと、 電気信号を処理し、画像を形成するステップと、 画像を記憶するステップと を含む、画像を捕捉する方法。 17.フォトダイオードがデジタルCMOS製作プロセスを使用して形成される 請求項16に記載の方法。 18.フォトダイオードが、拡散部がシリサイドで覆われるサリサイドCMOS プロセスを使用して形成される請求項16に記載の方法。 19.処理ステップの前に電気信号についてA/D変換を実施し、デジタル信号 を生成するステップをさらに含む請求項16に記載の方法。 20.処理ステップが、デジタル信号を圧縮して画像を形成することを含む請求 項19に記載の方法。 21.フォトセルのリセットおよびアクセスするデバイスを有する半導体フォト セルを製造する方法であって、 p−n接合が間に形成させるように基板内にウエルを形成し、そのp−n接合 が部分的にフォトセルの光感光領域となり、前記ウエルがフォトセルの関連にお いて最大領域となっていることを特徴とするフォトセルを製造する方法。 22.入射光にさらされる光学的な境界、 ウエル−基板フォトダイオードと、連動するリセットおよび読出し回路とをそ れぞれ有する、入射光に電気的に応答するフォトセルのセンサ・アレイ、 センサ・アレイに結合されたA/D変換ユニット、 A/D変換ユニットに結合された、A/D変換ユニットから受信したデジタル ・データを処理および圧縮し、検出された画像を生じるデジタル信号処理ユニッ ト、ならびに デジタル信号処理ユニットに結合された、検出された画像を記憶するための記 憶ユニット を含む画像捕捉システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/873,987 | 1997-06-12 | ||
US08/873,987 US6040592A (en) | 1997-06-12 | 1997-06-12 | Well to substrate photodiode for use in a CMOS sensor on a salicide process |
PCT/US1998/011432 WO1998057369A1 (en) | 1997-06-12 | 1998-06-03 | A well to substrate photodiode for use in a cmos sensor on a salicide process |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010053848A Division JP2010183089A (ja) | 1997-06-12 | 2010-03-10 | サリサイド・プロセスに基づくcmosセンサ中で使用するウエル−基板フォトダイオード |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2002505035A true JP2002505035A (ja) | 2002-02-12 |
JP2002505035A5 JP2002505035A5 (ja) | 2005-12-08 |
JP4637975B2 JP4637975B2 (ja) | 2011-02-23 |
Family
ID=25362746
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50282099A Expired - Fee Related JP4637975B2 (ja) | 1997-06-12 | 1998-06-03 | フォトダイオード、フォトセル、画像センサic及び画像捕捉システム |
JP2010053848A Pending JP2010183089A (ja) | 1997-06-12 | 2010-03-10 | サリサイド・プロセスに基づくcmosセンサ中で使用するウエル−基板フォトダイオード |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010053848A Pending JP2010183089A (ja) | 1997-06-12 | 2010-03-10 | サリサイド・プロセスに基づくcmosセンサ中で使用するウエル−基板フォトダイオード |
Country Status (5)
Country | Link |
---|---|
US (1) | US6040592A (ja) |
EP (1) | EP1004140B1 (ja) |
JP (2) | JP4637975B2 (ja) |
AU (1) | AU7722298A (ja) |
WO (1) | WO1998057369A1 (ja) |
Cited By (3)
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JP2005235893A (ja) * | 2004-02-18 | 2005-09-02 | National Univ Corp Shizuoka Univ | 光飛行時間型距離センサ |
JP2005537654A (ja) * | 2002-08-30 | 2005-12-08 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | イメージセンサ、イメージセンサを備えたカメラシステム、及び、そのような装置の製造方法 |
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Also Published As
Publication number | Publication date |
---|---|
EP1004140A1 (en) | 2000-05-31 |
EP1004140B1 (en) | 2007-12-19 |
WO1998057369A1 (en) | 1998-12-17 |
US6040592A (en) | 2000-03-21 |
JP2010183089A (ja) | 2010-08-19 |
EP1004140A4 (en) | 2000-09-20 |
JP4637975B2 (ja) | 2011-02-23 |
AU7722298A (en) | 1998-12-30 |
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